Frequently Asked Questions

We specialize in solar PV mounting clamps — mid clamps (for joining adjacent panels) and end clamps (for terminating panel rows). Both are available for 30mm, 35mm, 40mm, and 50mm panel frame thicknesses, in AL6005-T5 aluminum with SUS304 stainless steel fasteners.

For trial orders, there is no MOQ — you can order as few as you need to test the quality. For bulk orders, typical MOQ is 1,000 pcs per model. We can be flexible depending on your requirements.

Yes. We offer free samples for quality evaluation. You only pay for shipping. Contact us with your frame thickness and quantity needs, and we'll arrange the samples.

We accept:

• T/T (bank wire transfer) — preferred for most orders
• PayPal — for small orders and samples
• Alibaba Trade Assurance — for orders placed through Alibaba

For first-time orders, we typically require 30% deposit and 70% balance before shipment.

Typical lead times:

• Samples: 1–3 business days (if in stock)
• Bulk order (1,000–10,000 pcs): 7–15 business days
• Large order (10,000+ pcs): 15–25 business days

Exact lead time depends on current production schedule and quantity. We'll confirm at the time of quotation.

We ship via:

• Express (DHL, FedEx, UPS): 3–7 days — best for samples and small orders
• Air freight: 5–10 days — for medium-sized orders
• Sea freight: 20–35 days — most cost-effective for bulk orders

We can ship FOB Shanghai, CIF, or DDP depending on your preference.

Standard packaging:

• Inner: Small orders in poly bags; bulk orders in sturdy cartons with layer separation
• Outer: Palletized with stretch wrap and edge protection
• Custom: OEM branding and retail-ready packaging available on request

Yes. We can customize:

• Clamp body with your brand marking
• Custom packaging with your logo and design
• Neutral packaging (unbranded) for resellers

Minimum quantity for OEM is typically 5,000 pcs per model.

Our products are tested to:

• IEC 61215 — mechanical load and pull-out testing
• IEC 61730 — PV module safety standard
• RoHS — restriction of hazardous substances
• ASTM B244 / B117 — anodizing thickness and salt spray testing

Mill test certificates for material traceability are available per batch.

We provide a 10-year warranty against manufacturing defects under normal installation and operating conditions. This covers material defects, anodizing failure, and structural failure due to manufacturing issues.

You need to match the clamp to your solar panel's frame thickness. Measure the frame edge with a caliper — typical thicknesses are 30mm, 35mm, 40mm, or 50mm. We have a guide here: Solar Panel Frame Thickness Guide. If you're unsure, send us a photo of your panel profile and we'll help you identify the right clamp.